Earlier, Iran on Tuesday test-fired two ballistic missiles during the drills.

White House spokesman Josh Earnest on Tuesday said that Iran's recent ballistic missile tests did not violate an international nuclear agreement.

Also on Tuesday, US State Department spokesman John Kirby echoed Earnest that the tests, if confirmed, will not be a breach of the Iran nuclear deal. However, he warned that the US will not "turn a blind eye to this".

Separately, under UN Security Council Resolution 1929, Iran was prohibited from working on ballistic missiles capable of delivering nuclear warheads.